Draft-gear rigging.



No. 850,498. PATENTED APR. 16, 1907.

- G. W. SCOTT & O. A. THELIN.

DRAFT GEAR RIGGING.

APPLIOATION FILED JULY 13. 1903.

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George W Scott, Oscar jZ TfieZin;

UNITED srA'rns PATENT 'ornron.

GEORGE WELSBY SCOTT AND OSCAR ALBIN THELIN, OF- CHICAGO, ILLINOIS, ASSIGNORS, BY DIRECT AND MESNE ASSIGNMENTS, TO THE NATIONAL MALLEABLE OASTINGS COMPANY, OF CLEVELAND, OHIO. A CORPORA- TIONOF OHIO. I

DRAFT-GEAR RIGGING.

Patented A a-a1 16, 1907.

Application filed July 13, 1903. Serial No. 165,204.

vented certain new and useful Improvements in Draft-Gear Rigging, of which the following is aspecification.

'Our invention relates in general to draft gear rigging used for attaching together the 3 several cars in a train, and consists essentially in means for mounting the draw bar and yoke and springs and all the drawing. apparatus upon a pivoted frame attached to a fixed part of the car frame,

The objects of our invention are, to provide for the pivotal mounting of the draw bar; to provide means for normallyholding a pivoted draw bar in place; to provide a-piv oted mounting which will take both thrust and pull of the draw bar and carry the draw bar spring and its appurtenances; and avoid the danger of breakage from shocks.

'showing the draw bar holder in side elevation. I. j v,

Figure 2 is a plan of the draw bar holder and partial horizontal section through the draft sills and end sills of a car frame.

and all the parts move longitudinally within arecess formed by two side members called draft sills which extend from the body bolster of the car frame to the end. sill of the car frame. and on the end sill there is commonly The above objects, as well as other advan-- provided a draw bar carrier iron of a general U form in which the draw bar moves longgitudi'nally and has'but limited lateral play.

The limited clearance between the draw bar and the side stops affords a very small space for lateral movement of-the draw bar when coupled with another as in the case of cars on sharp curves, and it is well known that this limited side clearance is insufficient, and that the inability of the draw bar to assume avdirection which it would take if it were free to move laterally the required distance results-in damaging shocks and stresses being applied to the ends of the draft sills and also to the end sills of the car and to adjacent parts. If the side clearance of the stops were made larger but without the intervention of ,a suitable controlling device, it, would but increase the shocks'consequent upon angular impact. Furthermore there would be no assurance that the draw bar head would be found in the proper situation for coupling.

In order to overcome many of these difliculties we provide for the attachment of the a draw bar by pivotal connection to some fixed portion of the under frame and allow lateral movement of the draw bar and also provide means for returning it to its normal position when uncoupled. In the accompanying drawings the draft sills 7, the end sill 8 and the body bolster of the frame, 9, may be of the ordinary construction. Thedraw bar head 15, draw bar 16, yoke 17, followers 18, and spring 19 may be of anyordinary construction, and do not-form part of our invention.

At some point, either integrally with the body bolster of the car frame or attached thereto or attached both to the body holster and to the draft sills we provide a bracket 10 which has forwardly projectihg bearing lugs 11'", and in these bearing lugs we pivot a draft rigging holder 20 which is fastened therein by a pin. 22 and may abut both against the pin and also by reason of the head 21 may abut directly against the lugs 11 of the bracket 10. 1

The holder 20 consists essentially of an open frame which is provided with space indicated at 24-for the reception of the draw bar yoke, v springs, and followers as shown-therein, and at its forward end has a housing23 to embrace the draw bar.

guides '27 bolted 'theretoby the bolts 28.

In the present instance thedraft rigging holder -is designed with an open top and I bottom and the followers 18are retained in place therein by means-of the d raw bar This forms a 'space, 24,.Which containsthe' 1 springs 19 and followers 18 and allows free I vplay of the yoke 17 in the open space above and below, as will be evident from Figure -6'.- l.

The forward 'end'ofthe holder has ahousing" i 1 23 embracing the drawbar 1 6, and the latter i is retained in place by means of the bolt 26 as shown in Figure 5, which also acts specifically "to restrain the verticalsides of housing2f3 from spreading. By this open-bottom construction the placing and removalof'the. entire draft rigging into and from the draft rigging holder by'merely removing the flanges framingwithout departing from the spirit of upon the plate 1e allows of considerable latto maintain the uncoupled draw bar in'proper of spring or equivalent mechanism as the flat and buffing strains upon the draft rigging king pin at the body bolster and therefore we.

'holder-at-thepoint shown andattached (ii re'ctly to the body bolster or cross sills of the horn or safety lug 29 will at the time of the application of the shockin movement; en-'{ gage with one of thethrust locks 13'and the 27 and the bolt 26 is facilitated, as will be apparent from referenceto the'drawings. At the front end of the holder 20 and ati tached to the end sill'8 we provide a draw bar carrier 12 which is prefeiably made integral With thrust blocks13, and Whichis provided with a bearin seat 14 therein-and the side. steps 14 as s own in Figure 3. The space eral movement of the draw bar, and in order.

position for coupling we provide some form sprlngs 25, having a bearing uponthe respec tive sides of the holder as shown in Figure 2. It is obvious-that the spring mechanism 25 or its equivalent may be'attached to holder 20 and its force exerted against the our invention."

In such constructions we re ard it as of great importance that most 0 the. pulling should be taken up near the position of the have provided the pivot of the draft rigging lateral movement of the draw bar will be are rested, and the destructive shock upon the side stops 14 avoided. It will be seen that the engagement 'of the horn or safety lug 29 with the thrust block 13 will not take place in any but cases of extreme buffing stresses, inwhich cases the horn or safety lug 29 will be pushedin against the draw bar carrier plate anrl'thrust blocks'lS, while in other cases the draw bar is free to swing sidewise the full exr' tent of the space upon the bearing 14 as before descrih'ed. The draw bar carrier 12 shown in Figures 1 and 4 as ntegral wlth thrust blocks 13 may obviously be divided from our invention. It will'beunderstood of course that in our construction the draw bar.

holder 20 practically takes the" place of the draft sills 17 so far as supporting the followers and springsv are concerned, and it will'be e vi into a plurality of; parts without departure dent that so far as thedraft'rigging itself requires it, the draft sills. Y'might be-entirely dispensed with, as we regard it as important to attach the draft rigging at the point shown,

directly -with the body bolster, or as near as practicable thereto. And it will be of course understood that we are not restricted to any form of, draft rigging nor to any form of spring for'thepurpose's described herein. In the .case of the use of what are called friction draft gears of co'urse'the housing of the draft rigging holder 20 may be made of proper design and strength to resist the thrusts infied-withoutan'y departure from ourinvention.

The many advantages of this device will duced in such rigging, and otherwise the design of the housing'may be, changed or modireadily occur to those familiar with the use-of 1 draft riggingon cars. The means by which the drawbar is retained normally in place. at

the center of a car, it will be observed, does not interfere with the application of the drawing and bufiing strains directly atthe center of the body bolster in the most ap.

proved position, while the lateral movement allowed to the draw bar easily accommotakes place whenever-coupled cars are upon a sharp. curve; a

Having thus described our, lnvention and illustrated its .us'e,.what we claim, and desire to secure by Letters Patent, isthe following:

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' dates the displacement from alinement which 3 .1; In draft rigging, the combination with .a pivotally mounted holder for the draw ba'r ofa carrier allowing lateral movement of'the .bar, and means-for taking upthe sidewise shock in extreme cases.

2. In draft rigging, the combinationfwith a draw-bar having a pivotal mounting, of a draw-bar carrier provided with a wide bearing -se'at to allow of lateral movement of the bar, and thrust blocks for directly taking-up sidewise thrust of the bar in extreme movements. Y

4 3. The combination with'a draw-bar head' having an upwardly projecting safety lug or bracket,- of a draw-bar carrier provided thrust blocks to co-operate with said lug upon the draw-bar headrincase of extreme angular concussive shocks. 7

4. The combination Witha draw-bar head having an upwardly projectin safet 111 or bracket, of a draw-bar carrier prov-ided with thrust blocks to co-operate with -said lug upon the draw-bar concussive shocks.

5. The combination with a car frame and'a pivoted housingfor the draw bar and spring therefor, of a draw bar holder or bearing inserted in the car frame and having a broad seat allowing lateral play of the bar, and a pair of integral stops extending outside of the car frame and adapted to engage the coupler head on itssides when pressed inward to,ex

treme position, substantiallyas described.

6. In draft 'gear'rigging the combination with the car frame of a bracket thereon, and a swinging draw bar casing pivoted in the bracket and rovided with thrust shoulders engaging the racket, to relieve the pivoting pin of 'rpfessure, substantially as described.

draw bar casing adapted to contain a spring and followers, and having a slot for the draw bar yoke, a drawbar rovided with a yoke and a coil spring and fo ilowers removably re- 'tained in the casing, springs to retain the pivoted casing normally in central 'alinement head in case of extreme.

e combination of an integral castwith the car, and side stops on the car frame engaging the coupler head when 'ressed inprojection in cases of extreme angular concussive shocks; substantially as described.

9. In draft rigging, a pivoted draft rigging holder forming a housing for the drawbar, and drawbar' spring, yoke and followers, springs arranged to bear upon opposite sides of the holder, and co-operating thrust projections or bearings adapted to take up the side thrust in casesof extreme angular concussive shocks; substantially as described.v

In testimony whereof we have hereunder signed our names in the presence of the two subscribed witnesses. I

GEORGE WELSBY scoTr, :oscAR ALBIN THELIN,

Witnesses:

'PAUL' CARPENTER, CHAS, H; EBEBT. 

